Results of celiac trunk stenting during fenestrated or branched aortic endografting

• Published in: Journal of vascular surgery 2016-12, Vol.64 (6), p.1595-1601
• Main Authors: Wattez, Hélène, MD, Martin-Gonzalez, Teresa, MD, PhD, Lopez, Benjamin, MD, Spear, Rafaëlle, MD, PhD, Clough, Rachel E., MD, PhD, Hertault, Adrien, MD, Sobocinski, Jonathan, MD, PhD, Haulon, Stéphan, MD, PhD
• Format: Article
• Language: English
• Subjects: Aged; Aortic Aneurysm - complications; Aortic Aneurysm - diagnostic imaging; Aortic Aneurysm - physiopathology; Aortic Aneurysm - surgery; Aortography - methods; Blood Vessel Prosthesis; Blood Vessel Prosthesis Implantation - adverse effects; Blood Vessel Prosthesis Implantation - instrumentation; Celiac Artery - abnormalities; Celiac Artery - diagnostic imaging; Celiac Artery - physiopathology; Celiac Artery - surgery; Computed Tomography Angiography; Constriction, Pathologic - complications; Constriction, Pathologic - diagnostic imaging; Constriction, Pathologic - physiopathology; Constriction, Pathologic - surgery; Endovascular Procedures - adverse effects; Endovascular Procedures - instrumentation; Female; Graft Occlusion, Vascular - etiology; Graft Occlusion, Vascular - physiopathology; Humans; Imaging, Three-Dimensional; Male; Median Arcuate Ligament Syndrome; Middle Aged; Predictive Value of Tests; Prosthesis Failure; Radiographic Image Interpretation, Computer-Assisted; Retrospective Studies; Risk Factors; Stents; Surgery; Time Factors; Treatment Outcome; Ultrasonography, Doppler, Duplex; Vascular Patency
• ISSN: 0741-5214; 1097-6809
• DOI: 10.1016/j.jvs.2016.06.095

Abstract Background Endovascular repair of aortic aneurysms involving the visceral segment of the aorta often requires placement of a covered bridging stent in the celiac axis (CA). The median arcuate ligament (MAL) is a fibrous arch that unites the diaphragmatic crura on either side of the aortic hiatus. The ligament may compress and distort the celiac artery and result in difficult cannulation, or stenosis and occlusion of the vessel. This study evaluated the influence of the MAL compression on the technical success and the patency of the celiac artery after branched and fenestrated endovascular aortic repair. Methods We retrospectively analyzed a cohort of consecutive patients treated electively for complex aneurysms with branched and fenestrated endovascular aortic repair between January 2007 and April 2014. All data were collected prospectively. Analysis of preoperative computed tomography angiography on a three-dimensional workstation determined the presence of MAL compression. Patency of the CA bridging stent was assessed during follow-up by computed tomography angiography and duplex ultrasound evaluation. Statistical analysis was performed to compare the outcomes of patients with MAL (MAL+) and without MAL (MAL-) compression. Results Of 315 patients treated for aortic disease involving the visceral segment during the study period, 113 had endografts designed with a branch (n = 57) or fenestration (n = 56) for the CA. In 45 patients (39.8%), asymptomatic compression of the CA by the MAL was depicted (MAL+). Complex endovascular techniques were required in this group to access the CA in 16 (14.2%) patients (vs none in the MAL- group; P  = .003), which lead to a failed bridging stent implantation in seven patients (6.2%). Increased operative time and dose area product were observed in the MAL+ group, but this did not reach statistical significance. In the MAL+ group, no thrombosis of the CA bridging stents were observed during follow-up; an external compression of the CA bridging stent was depicted in six patients but without hemodynamic effect on duplex ultrasound imaging. In the MAL- group, one CA bridging stent occlusion occurred owing to an embolus from a cardiac source. Conclusions MAL compression is associated with good celiac trunk bridging stent patency during follow-up, but with a higher rate of technical difficulties and failed bridging stent implantation during the procedure.